The Universe and Waves

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Across
  1. 4. What the sun will be in its final stages of life
  2. 5. A type of galaxy that is old and can no longer produce stars
  3. 7. The same type of galaxy as the milky way
  4. 11. a graph of many stars visualizing the relationship between luminosity(Brightness) and the stars temperature
  5. 12. the distance between two waves from their highest or lowest points
  6. 14. How bright a star appears to be from Earth
  7. 15. The range of electromagnetic waves organized from their wavelength or freauency
  8. 18. the theory that indicates our universe is expanding
  9. 19. Planets that orbit nearest the sun
Down
  1. 1. The waves with the shortest wavelength on the spectrum
  2. 2. The number of waves produced in a specific amount of time
  3. 3. The substance that a wave might travel through
  4. 6. A type of matter that does not emit electromagnetic energy
  5. 8. Galaxies that do not have a uniform shape
  6. 9. The lowest area of a wave
  7. 10. The height of a wave measured from the rest, or bottom of the wave, to the top
  8. 11. A unit used to measure a frequency for a wave
  9. 13. An example from this specific type of wave is Doppler radar
  10. 16. The top of a wave
  11. 17. Waves The type of electromagnetic waves with the least amount of energy